This document summarizes treatment options for patients with synchronous liver metastases and colorectal cancer. It finds that the optimal approach is to treat patients with the most effective systemic chemotherapy in combination with multidisciplinary team evaluation every two months. Liver surgery should be performed once the liver metastases become resectable, followed by systemic treatment before and/or after primary tumor resection for at least six months. However, more research is still needed to determine the best treatment sequence based on individual patient factors.

1. Clinics of Oncology
ISSN: 2640-1037
Review Article
Analysis of Treatment Option for Synchronous Liver
Metastases and Colon Rectal Cancer
Coco D
1*
and Leanza S
2
1
Ospedali Riuniti Marche Nord, (Pesaro), Italy
2
Carlo Urbani Hospita, Jesi (Ancona), Itay
Volume 2 Issue 1- 2019
Received Date: 03 May 2019
Accepted Date: 26 May 2019
Published Date: 02 Jun 2019
1. Abstract
Colorectal or bowel cancer is one of the major cause of cancer worldwide. Research has shown that
15 to 20 % colorectal cancer patients are also diagnosed with synchronous liver metastases (LM) at
presentation and about one third eventually develop liver lesions (Leporrier, Maurel, Chiche, Bara,
Segol, and Launoy, 2006; Manfredi, Lepage, Hatem, Coatmeur, Faivre, and Bou-vier, 2006).
Management of cases with colorectal cancer comorbid with liver metastases is more complex
(Schmoll, Van Cutsem, Stein, Valentini, Glimelius, Haustermans, Bismuth, Castaing, and Traynor,
1988). This highlights the need for suggesting the need for effective treatment while optimizing
timing during surgical and medical treatment of primary plus metastatic disease. Ac-cording to
Fong, Fortner, Sun, Brennan, and Blumgart, 1999), such patients cases are likely to present with
severe cancer biology and thereby less likely to be long-term survivors.
2. Introduction
Colorectal or bowel cancer is one of the major cause of cancer
worldwide. Research has shown that 15 to 20 % colorectal can-
cer patients are also diagnosed with synchronous liver
metastases (LM) at presentation and about one third eventually
develop liver lesions[1-6]. Management of cases with colorectal
cancer comor-bid with liver metastases is more complex[7-9].
This highlights the need for suggesting the need for effective
treatment while optimizing timing during surgical and medical
treatment of pri-mary plus metastatic disease. According to [9-
11], such patients cases are likely to present with severe cancer
biology and thereby less likely to be long-term survivors.
The question as whether primary lesion surgery should precede
metastases resection is still debatable. Logically, the manage-ment
of these patients can be categorized into two groups. The first case
is where the patients have hepatic disease synchronized with
extrahepatic metastatic condition. These patients are treated with
systemic chemotherapy as provided in the current treat-ment
guidelines for patients with advanced multisite metastatic
colorectal cancer disease [12] National Institute of Clinical Excel-
lence, 2011). The second case is where patients have liver-limited
synchronous metastatic disease which occurs frequently but yet
a rising complex clinical management issue[11-13].
Conventionally, treatment of colorectal synchronous liver me-
tastasis patients comprised colorectal primary tumour resection
and then adjuvant chemotherapy in combination with liver re-
section[10,12,14]. However, Mentha, Majno, Andres, Rubbia-
Brandt, Morel, and Roth (2006) challenged this view by
advocat-ing for advanced synchronous liver metastases
resection before the primary.
For patients with synchronous metastases, major advancements in
liver surgery have led to two alternative options. The first involves
synchronous liver metastases and colorectal primary resection
synchronously [13,14] which aims to remove mac-roscopic tumour
burden through a single operation. However, this approach may
lead to considerable complex morbidity with side effects on
progression-free survival [15]. The second option starts with liver
metastatic disease resection (i.e. reverse or liver-first
approach[16,17]. This approach is commonly indicated for
colorectal synchronous liver metastasis patients where rectal pri-
mary preoperative long-course chemoradiotherapy before surgi-cal
resection is likely to create a ‘window’ for liver resection[14].
*Corresponding Author (s): Danilo Coco, Ospedali Riuniti Marche Nord, Pesaro, Italy,
Tel:+393400546021, E-mail: webcostruction@msn.com
Citation: Coco D and Leanza S, Analysis of Treatment Option for Synchronous Liver Metastases and Colon
clinicsofoncology.com Rectal Cancer. Clinics of Oncology. 2019; 1(7): 1-3.

2. Volume 2 Issue 1 -2019
From oncological perspective, it is also arguable that the liver-
first strategy is advantageous since it addresses the hepatic
metastatic issue before it progresses into the liver which makes
it unresect-able [12,13. The focus of this study is to determine
the order to be followed while treating patients with
synchronous liver metasta-ses and colon rectal cancer (liver
first, colon first or syncrhonus surgery).
3. Methodology
This study used a systematic review method to collect data from
previous peer review papers. The researcher conducted a search
of the relevant articles from various databases, namely PubMed
and SCOPUS sciencedirect as well as EMBASE plus NHS
Knowl-edge Network. All the collected articles were then
subjected to assessment criteria for relevance and only seven
articles met this criteria for literature review.
4. Results and Discussion
A systematic review by Guraya (2013) found that a number of
factors limit most patients from undergoing resection at initial
stages. These are size, anatomic location, and extent of disease
to insufficient remnant liver volume as well as comorbidities.
However, surgery currently provides the best chance for curing
colorectal liver metastases patients. The implication is that other
treatment modalities must be explored to control or downsize
he-patic lesions prior to surgical treatment. Currently, most
patients are treated with systemic plus regional chemotherapy to
comple-ment the surgical intervention.
An expert opinion by Adam (2007) suggested that synchronous
liver metastases management is changing with time. In his view,
treatment of resectable lesions is open for either approach un-like
irresectable lesions in which treatment starts with systemic
chemotherapy. However, there is no evidence to support this ap-
proach as the first choice of treatment. The implication is that fu-
ture research should explore on this issue using controlled trials.
In a study by Per Pfeiffer, Thomas and Robert (2018) it was re-
ported that there is no clear optimal sequence and individual usage
despite that its use on individual basis. Additionally, the authors
recommended multidisciplinary approach along with decision
making for patients with rectal cancer (RC) and syn-chronous
metastases. In the case of a multidisciplinary approach, treatment
aim is first defined followed by regular follow up, re-evaluation and
re-discussion after every 2 months. The authors recommended
treatment initiation starting with the most effec-tive systemic
chemotherapy (i.e. triplet chemotherapy along with targeted therapy
in view of RAS status) in combination multidis-ciplinary team
(MDT) re-evaluation every 2 months. Moreover,
Review Article
they recommended that liver surgery should be initiated once
colorectal liver metastases (CRLM) becomes resectable
followed by systemic treatment prior to and/or after primary
resection for a minimum of 6 months. Furthermore, SC-RT may
be combined with systemic chemotherapy at any point with or
without mini-mal delay[12 -17].
Recommended treatment of synchronous CRLM starting with
abdominal high-dose contrast-enhanced computed tomography
(CT) to establish the possibility of resection. In their views, as-
ymptomatic CRC along with resectable synchronous CRCLM
should be treated with chemotherapy with radiotherapy or che-
motherapy alone then either one-stage surgery if hepatic disease is
limited and easy-to-resect primary tumours or by use staged
surgery for other patients. In patients with asymptomatic CRC
along with non-resectable synchronous CRCLM, optimal che-
motherapy is performed to make LM resectable and then hepatic
surgery and primary tumour resection. The third option is ap-
plicable to patients with symptomatic CRC along with resectable
synchronous CRCLM. In this case, primary tumour resection of
perforated or occlusive tumours is done unlike the bleeding
tumours which may cause anaemia and then chemotherapy in
combination with LM surgery. Where patients have symptomatic
CRC with non-resectable synchronous CRCLM, primary tumour
resection for perforated or occlusive tumours should first be per-
formed, then chemotherapy and finally LM surgery in case tu-mour
shrinkage occurs. Patients with tumours with bleeding that cause
anaemia should be treated with induction chemotherapy to
downsize both primary tumour plus LM before operating sites with
more significant tumour load such as the liver.
Christian, Valentinus, Erik, Sam, Jan, Ingvar, & Gert (2017) pre-
sented 109 patients with un-resected colorectal cancer 9CRC) along
with synchronous liver metastases to a MDT conference. Seventy-
five patients were indicated for liver-first and the remain-ing 34 for
classical strategy. The findings showed that 35% patients failed to
complete the liver-first treatment versus 10 patients from the
classical strategy (P = 0.664). The failure rate was attributable to
the most frequently disease progression. There were 91 patients
who received the primary tumor resection prior to the liver me-
tastases. Of these, 67 were non-referrals and 24 after MDT alloca-
tion. Median survival following diagnosis in the primary tumour
resection was 60 (48 to 73) months versus 46 (31 to 60) months in
the liver-first treatment group (n = 49), (P = 0.310). The study
concluded that a maximum of 35% colorectal cancer with syn-
chronous liver metastases patients fail to complete the necessary
liver plus bowel resections, regardless of the treatment strategy.
Copyright ©2019 Coco D al This is an open access article distributed under the terms of the Creative Commons Attribution License, which
2
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3. Volume 2 Issue 1 -2019 Review Article
5. Conclusion and Recommendations
In general, this review found that the treatment order for
patients withcolorectal synchronous liver metastasis patients.
The gen-eral observation is that patients with colorectal liver
metastases should be treated with the most effective systemic
chemotherapy in combination multidisciplinary team (MDT) re-
evaluation ev-ery 2 months. However, liver surgery should be
performed once colorectal liver metastases (CRLM) becomes
resectable followed by systemic treatment prior to and/or after
primary resection for at least 6 months. However, this study
recommends the need for future research to ascertain the best
treatment options based on patient needs.
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